Added optional command argument to 'rhc app ssh' so you can run a
command, for example:

rhc app ssh myapp> ls /tmp
Merge pull request #398 from ncdc/add-ssh-command

Merged by openshift-bot
Support NO_PROXY by defaulting to httpclient's support.  This means non-qualified URIs are no longer supported.
Fix Ruby 1.8.7, test equality of strings
Merge pull request #399 from smarterclayton/issue_390_handle_no_proxy

Merged by openshift-bot